São Miguel do Guaporé weather in December

In December, São Miguel do Guaporé sees average daytime highs of 30°C and overnight lows near 23°C, with 239 mm of rain across 27 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 2% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 42 min by month's end. Set against the rest of the year, December is São Miguel do Guaporé's 9th-clearest and 5th-windiest month. For the whole year in context, see São Miguel do Guaporé's year-round climate.

Daytime high
30°
7th warmest
Overnight low
23°
12th coldest
Rainfall
239 mm
27 wet days
Daylight
12 h 42 min
5:47 AM – 6:27 PM
Cloud cover
85%
9th clearest
Wind
6 km/h
5th windiest
Solar energy
4.99 kWh/m²
Travel score
2.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in São Miguel do Guaporé reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in São Miguel do Guaporé

Once humidity and wind are folded in, December averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

São Miguel do Guaporé weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°25527.812.62.9
Feb29° / 23°25625.612.42.9
Mar30° / 23°24527.612.12.9
Apr30° / 22°14821.711.73.5
May30° / 21°7114.211.54.7
Jun31° / 20°194.411.35.5
Jul32° / 19°142.811.45.2
Aug33° / 20°285.211.64.2
Sep33° / 22°7613.411.93.3
Oct32° / 23°14421.112.32.9
Nov31° / 23°20224.412.52.9
Dec30° / 23°2392712.72.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
91090
101090
111090
121090
131090
141189
151189
161189
171189
181189
191189
201189
211189
221189
231189
241090
251090
261090
27991
28892
29892
30793
31793

Chance of precipitation in December

Any precipitation

São Miguel do Guaporé gets around 239 mm of rain over 27 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 87% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
184
284
384
485
585
685
785
885
986
1086
1186
1286
1387
1487
1587
1687
1788
1888
1988
2088
2188
2288
2388
2488
2588
2688
2788
2888
2988
3089
3189

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100955
200964
300964
400964
500964
600964
700964
800964
900964
1000964
1111944
1211944
1311944
1411944
1511944
1611944
1711944
1811944
1911944
2011953
2101963
2201963
2301963
2401963
2501972
2601972
2701972
2801972
2900973
3000973
3100973

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:41 AM to 5:54 AM, and sunset from 6:20 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:416:20
212.65:426:20
312.65:426:21
412.75:426:21
512.75:436:22
612.75:436:22
712.75:436:23
812.75:436:23
912.75:446:24
1012.75:446:24
1112.75:456:25
1212.75:456:25
1312.75:456:26
1412.75:466:26
1512.75:466:27
1612.75:476:27
1712.75:476:28
1812.75:476:28
1912.75:486:29
2012.75:486:29
2112.75:496:30
2212.75:496:30
2312.75:506:31
2412.75:506:31
2512.75:516:32
2612.75:516:32
2712.75:526:33
2812.75:526:33
2912.75:536:34
3012.75:536:34
3112.75:546:34

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.99 kWh/m².

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 5.67 kWh/m² in October across the year — December's 4.99 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for São Miguel do Guaporé

In seasonPeak

In December, São Miguel do Guaporé sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

São Miguel do Guaporé's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit São Miguel do Guaporé?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.9
Sightseeing
7th-best month of the year
4.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in São Miguel do Guaporé.

What to pack for São Miguel do Guaporé in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, São Miguel do Guaporé sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in São Miguel do Guaporé in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Miguel do Guaporé peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 24UV 15Sep 14UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep3Moderate
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in São Miguel do Guaporé in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in São Miguel do Guaporé is worst in September — around 70 µg/m³ PM2.5 (unhealthy), about 8.6× the cleanest month (June, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateUnhealthyModerateSep 1666 µg/m³Jun 108 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar12Moderate
Apr9Good
May8Good
Jun8Good
Jul10Good
Aug39Poor
Sep70Unhealthy
Oct38Poor
Nov19Moderate
Dec13Moderate
Location & terrain

Where is São Miguel do Guaporé?

São Miguel do Guaporé sits at 11.7°S, 62.7°W, 193 m above sea level, in Brazil. The nearest listed city is Alta Floresta d'Oeste, 88 km away.

Topography around São Miguel do Guaporé

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Miguel do Guaporé.

Within 3 km, the terrain around São Miguel do Guaporé has only modest variations in elevation — a maximum elevation change of 50 m around an average of 192 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 506 m.

The land around São Miguel do Guaporé is covered by grassland (57%) within 3 km, grassland (48%) and trees (45%) within 16 km, and trees (60%) and grassland (39%) within 80 km.

3 km
50 m
16 km
250 m
80 km
506 m
treesgrasslandcroplandartificial surfaces
December weather nearby: Alta Floresta d'Oeste 88 km · Rolim de Moura 100 km · São Francisco do Guaporé 101 km · Presidente Médici 105 km · Ouro Preto do Oeste 118 km · Ji Paraná 122 km · Cacoal 141 km · Jaru 142 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for São Miguel do Guaporé (-11.6936°, -62.7114°, elevation 193 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).